Query data from MS SQL db through Oracle ? By using JAVA ?

Hi folks,
I would like to sync our one table in oracle db with table in different system, stored in MS SQL database.
What would be the easiest option for connection from Oracle to MS SQL db to be able to query data from MS SQL through some Oracle package?
If possible, I would like to keep all "tricky steps" within Oracle database. I heard about option with Java, but so far we have no experience with java in Oracle.
Our database: Oracle 11g Database Standard Edition One
Many thanks,
Tomas

C:\Users\tomeo>dg4pwd HELIOS
ORACLE Gateway Password Utility
Constructing password file for Gateway SID HELIOS
For user account SYSTEM
OPW-00001: Unable to open password-file (RC=0)
C:\Users\tomeo>

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Attachments:
Frequency Sweep Data Capture.vi ‏136 KB
LCR switching labview.JPG ‏99 KB
Frequency List.txt ‏46 KB

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Thanks for your help..i do not want any third party
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tables...hope it helps you too!
* Copyright Isocra Ltd 2004
* You can use, modify and freely distribute this file
as long as you credit Isocra Ltd.
* There is no explicit or implied guarantee of
functionality associated with this file, use it at
your own risk.
package com.isocra.util;
import java.sql.DatabaseMetaData;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.PreparedStatement;
import java.sql.ResultSetMetaData;
import java.util.Properties;
import java.io.FileInputStream;
import java.io.IOException;
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the tables and contents out to stdout in the form
of
* a set of SQL executable statements
ublic class db2sql {
/** Dump the whole database to an SQL string */
public static String dumpDB(Properties props) {
String driverClassName =
props.getProperty("driver.class");
String driverURL =
props.getProperty("driver.url");
// Default to not having a quote character
String columnNameQuote =
props.getProperty("columnName.quoteChar", "");
DatabaseMetaData dbMetaData = null;
Connection dbConn = null;
try {
Class.forName(driverClassName);
dbConn =
DriverManager.getConnection(driverURL, props);
dbMetaData = dbConn.getMetaData();
catch( Exception e ) {
System.err.println("Unable to connect to
database: "+e);
return null;
try {
StringBuffer result = new StringBuffer();
String catalog =
props.getProperty("catalog");
String schema =
props.getProperty("schemaPattern");
String tables =
props.getProperty("tableName");
ResultSet rs =
dbMetaData.getTables(catalog, schema, tables,
null);
if (! rs.next()) {
System.err.println("Unable to find any tables
matching: catalog="+catalog+" schema="+schema+"
tables="+tables);
rs.close();
lse {
// Right, we have some tables, so we
can go to work.
// the details we have are
// TABLE_CAT String => table catalog (may be null)
// TABLE_SCHEM String => table schema
(may be null)
// TABLE_NAME String => table name
// TABLE_TYPE String => table type. Typical types
are "TABLE", "VIEW", "SYSTEM TABLE", "GLOBAL
TEMPORARY", "LOCAL TEMPORARY", "ALIAS", "SYNONYM".
// REMARKS String => explanatory
comment on the table
// TYPE_CAT String => the types
catalog (may be null)
// TYPE_SCHEM String => the types
schema (may be null)
// TYPE_NAME String => type name (may
be null)
// SELF_REFERENCING_COL_NAME String
=> name of the designated "identifier" column of a
typed table (may be null)
// REF_GENERATION String => specifies
how values in SELF_REFERENCING_COL_NAME are created.
Values are "SYSTEM", "USER", "DERIVED". (may be
null)
// We will ignore the schema and
stuff, because people might want to import it
somewhere else
// We will also ignore any tables
that aren't of type TABLE for now.
// We use a do-while because we've
already caled rs.next to see if there are any rows
do {
String tableName = rs.getString("TABLE_NAME");
String tableType =
rs.getString("TABLE_TYPE");
if
("TABLE".equalsIgnoreCase(tableType)) {
result.append("\n\n--
"+tableName);
result.append("\nCREATE TABLE
"+tableName+" (\n");
ResultSet tableMetaData =
dbMetaData.getColumns(null, null, tableName, "%");
boolean firstLine = true;
while (tableMetaData.next()) {
if (firstLine) {
firstLine = false;
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the previous line with a comma
result.append(",\n");
String columnName =
tableMetaData.getString("COLUMN_NAME");
String columnType =
tableMetaData.getString("TYPE_NAME");
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String nullable =
tableMetaData.getString("IS_NULLABLE");
String nullString =
"NULL";
if
("NO".equalsIgnoreCase(nullable)) {
nullString = "NOT
NULL";
result.append("
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primary key constraint
try {
ResultSet primaryKeys =
dbMetaData.getPrimaryKeys(catalog, schema,
tableName);
// What we might get:
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// TABLE_SCHEM String =>
table schema (may be null)
// TABLE_NAME String =>
table name
// COLUMN_NAME String =>
column name
// KEY_SEQ short =>
sequence number within primary key
// PK_NAME String =>
primary key name (may be null)
String primaryKeyName =
null;
StringBuffer
primaryKeyColumns = new StringBuffer();
while
(primaryKeys.next()) {
String thisKeyName =
primaryKeys.getString("PK_NAME");
if ((thisKeyName !=
null && primaryKeyName == null)
||
(thisKeyName == null && primaryKeyName != null)
||
(thisKeyName != null && !
thisKeyName.equals(primaryKeyName))
||
(primaryKeyName != null && !
primaryKeyName.equals(thisKeyName))) {
// the keynames
aren't the same, so output all that we have so far
(if anything)
// and start a
new primary key entry
if
(primaryKeyColumns.length() > 0) {
// There's
something to output
esult.append(",\n PRIMARY KEY ");
if
(primaryKeyName != null) {
result.append(primaryKeyName); }
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// Start again with the new name
primaryKeyColumns
= new StringBuffer();
primaryKeyName =
thisKeyName;
// Now append the column
if
(primaryKeyColumns.length() > 0) {
rimaryKeyColumns.append(", ");
primaryKeyColumns.append(primaryKeys.getString("COLUMN
_NAME"));
if (primaryKeyColumns.length() > 0) {
// There's something
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result.append(",\n
PRIMARY KEY ");
if (primaryKeyName !=
null) { result.append(primaryKeyName); }
result.append("
("+primaryKeyColumns.toString()+")");
tch (SQLException e) {
// NB you will get this
exception with the JDBC-ODBC link because it says
// [Microsoft][ODBC
Driver Manager] Driver does not support this
function
ystem.err.println("Unable to get primary keys for
table "+tableName+" because "+e);
result.append("\n);\n");
// Right, we have a table, so
we can go and dump it
dumpTable(dbConn, result,
tableName);
hile (rs.next());
rs.close();
dbConn.close();
return result.toString();
} catch (SQLException e) {
e.printStackTrace(); //To change body of catch
statement use Options | File Templates.
return null;
/** dump this particular table to the string
buffer */
private static void dumpTable(Connection dbConn,
StringBuffer result, String tableName) {
try {
// First we output the create table stuff
PreparedStatement stmt =
dbConn.prepareStatement("SELECT * FROM "+tableName);
ResultSet rs = stmt.executeQuery();
ResultSetMetaData metaData = rs.getMetaData();
int columnCount =
metaData.getColumnCount();
// Now we can output the actual data
result.append("\n\n-- Data for "+tableName+"\n");
while (rs.next()) {
result.append("INSERT INTO "+tableName+" VALUES
for (int i=0; i<columnCount; i++) {
if (i > 0) {
result.append(", ");
Object value = rs.getObject(i+1);
if (value == null) {
result.append("NULL");
lse {
String outputValue =
value.toString();
outputValue =
outputValue.replaceAll("'","\\'");
esult.append("'"+outputValue+"'");
result.append(");\n");
rs.close();
stmt.close();
} catch (SQLException e) {
System.err.println("Unable to dump table
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JDBC etc. */
public static void main(String[] args) {
if (args.length != 1) {
System.err.println("usage: db2sql <property
file>");
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property file
// so lets open it
Properties props = new Properties();
try {
props.load(new FileInputStream(args[0]));
System.out.println(dumpDB(props));
} catch (IOException e) {
System.err.println("Unable to open
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Thanks i used your coding and it works well...
i also used other thing i inserting the queries and values in another schema with primary and foreign keys.. it works well..
but problem is i cannot retrieve the unique constraint and other check constraint..
i cannot insert it..
and also i cannot create table in order i create the original..
because the retrieve query s values display based on ascending order i want display query in creation time...
because when i foreign keys .. the references in available before i create the table..that means a(table name) followed b(table name) .. a(table name) has contain foreign key of b(table name) .. but b (table name) not yet to create .. is possible.. to retrieve based creation time...

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Query data from MS SQL db through Oracle ? By using JAVA ?

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